Hi guys good morning!
I need a help to make the connection and activation on the correct pins.
I connected to the tutorial below, also using the third source with 10v. But I don't know how to connect the OUT outputs to trigger the spindle.

Thanks for the opportunity.

Hi guys good morning!
I need a help to make the connection and activation on the correct pins.
I connected to the tutorial below, also using the third source with 10v. But I don't know how to connect the OUT outputs to trigger the spindle.

Thanks for the opportunity.

Your RnR USB ECO Motion board does not have any relay.
Either replace with another controller board that has a relay or add a $5 5V relay (designed for Arduino) to convert one of the outputs to a switch.

(see attached)

The relay can then switch on/off your spindle controller.